The Untouchables (1987)

In director Brian De Palma's epic crime/gangster drama of the Prohibition era:

• Treasury agent law enforcer Eliot Ness' (Kevin Costner) vow - to veteran Irish street cop James Malone (Oscar-winning Sean Connery) - to "get" notorious prohibition criminal Al Capone (Robert DeNiro) (who threatened: "I want this guy dead! I want his family dead! I want his house burned to the ground! I want to go there in the middle of the night and piss on his ashes!")
• Malone's wizened and repeated question and advice: ("What are you prepared to do?" - "You wanna know how you do it? Here's how, they pull a knife, you pull a gun. He sends one of yours to the hospital, you send one of his to the morgue. That's the Chicago way, and that's how you get Capone!")
• the violent board meeting featuring a raging Capone with a baseball bat; Capone brutally bashed in the brains of one of his unsuspecting cohorts with a baseball bat, hitting him four times from behind; the man slumped over dead onto the white tablecloth as blood drained from his head, and the camera pulled back in an overhead shot
• the climactic shoot-out scene in Chicago's Union Station - an homage or tribute to the Odessa steps sequence in The Battleship Potemkin (1925), in which a baby carriage (with a baby inside) rolled down a long flight of stairs